CVE-2026-45880
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when trying to remove the PCI device. Fix it by adding the missed percpu_ref_put().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
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Affected Versions
Linux / Linux
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < baa42b756d183a59572f3890981a3d32b8d05d40 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 51b7181cfbedf289ce794b6d97a1c596c309ec38 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < e19cce88ec4c4877f4ff2469099b9cf23cc3e93e 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < a1f4dc72efc3204db95d052058d785cad7ce755f 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 < 6220694c52a5a04102b48109e4f24e958b559bd3
Linux / Linux
6.2
References
git.kernel.org: https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 git.kernel.org: https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 git.kernel.org: https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e git.kernel.org: https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f git.kernel.org: https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3